Test Overview
Test Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP-MS)
Reference Range *
4- 6.4 mg/dL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday, Thursday
Analytic Time
14 - 21 days
Soft Order Code
MGRBC
MiChart Code
Magnesium, RBC
Synonyms
- RBC Magnesium
- Magnesium, Erythrocytes
Laboratory
Sendout
Reference Laboratory
Quest Valencia (#623)
Section
Special Testing
Specimen Requirements
Collection Instructions
Royal blue (trace element) and/or Metal-Free aliquot tubes are available from MLabs (800-862-7284). Collect blood in a royal blue top (trace element) tube with EDTA (K2). Centrifuge and aliquot rbcs into a metal-free tube within 2 hours of collection (KEEP red blood cells). Refrigerate. Plasma can be discarded when aliquotting.
Special Handling
This test requires only red blood cells. Must be spun and aliquotted within 2 hours.
Normal Volume
0.5 mL packed RBC (plasma discarded)
Minimum Volume
0.3 mL packed RBC (plasma discarded)
Rejection Criteria
Frozen specimens
Additional Information
Test sent to Quest Valencia; performed by MedFusion
Billing
CPT Code
83735
Fee Code
32128